识别皮层和皮层下部对站立的人体前期姿势调整的皮层和皮层贡献,这些预期的姿势调整先于伸出手臂的运动
Cassandra Russell1, Paul Stapley2, Jonathan Shemmell3
1Neuromotor Adaptation Laboratory, Faculty of Science, Medicine and Health, School of Medical, Indigenous and Health Sciences, University of Wollongong, Wollongong, Australia.
Experimental brain research
|October 24, 2025
概括
预期性姿势调整 (APAs) 主要是由皮层驱动的,对皮下参与的证据很少. 然而,在特定的肌肉收缩期间观察到脑干活动,这表明需要进一步调查.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 人体生理学 人体生理学
背景情况:
- 预期姿势调整 (APA) 对于在自愿运动期间保持平衡至关重要.
- 目前的理解在很大程度上将APA生成归因于皮质路径.
- 新出现的证据表明,潜在的亚皮层对APA监管的贡献.
研究的目的:
- 调查皮层下路径在产生APAs中的作用.
- 确定皮下干涉是否反映在运动唤起潜能 (MEP) 的特定组件中.
主要方法:
- 经磁刺激 (TMS) 用于引起运动唤起潜能 (MEP).
- 欧洲议会议员在APA之前和期间在不同的时间点记录了前肌和 Soleus 肌肉.
- 分析的重点是晚期的MEP组件,假设它们反映了皮层下活动.
主要成果:
- 记录显示了有限的证据,表明皮下肌肉在前和肌底肌肉中对APAs的贡献有限.
- 然而,与APA前的欧洲议会议员相比,在自愿的单体收缩期间的欧洲议会议员在后期阶段较小.
- 这表明在特定的运动任务中,潜在的皮下干涉,特别是在大脑干中.
结论:
- APAs主要由皮质机制控制.
- 证据表明,在APA期间,潜在皮质路径,特别是大脑干,在运动控制中可能发挥着有限的作用.
- 需要进一步的研究来准确地界定大脑干对APAs的贡献.
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